thread.start();
    thread.join();
    assertTrue(completed);
  }

  public void testNulls() {
    NullPointerTester npTester = new NullPointerTester();
    npTester.testAllPublicConstructors(ThreadFactoryBuilder.class);
    npTester.testAllPublicStaticMethods(ThreadFactoryBuilder.class);
    npTester.testAllPublicInstanceMethods(builder);
  }

    new NullPointerTester()
        .ignore(FailOnOneOfTwoConstructors.class.getDeclaredConstructor(String.class))
        .testAllPublicConstructors(FailOnOneOfTwoConstructors.class);
  }

  public void testConstructor_shouldFail() throws Exception {
    try {
      new NullPointerTester().testAllPublicConstructors(FailOnOneOfTwoConstructors.class);
    } catch (AssertionError expected) {
      return;
    }

  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {
    NullPointerTester npTester = new NullPointerTester();
    npTester.testAllPublicConstructors(Optional.class);
    npTester.testAllPublicStaticMethods(Optional.class);
    npTester.testAllPublicInstanceMethods(Optional.absent());
    npTester.testAllPublicInstanceMethods(Optional.of("training"));
  }

  @GwtIncompatible // NullPointerTester
  public void testNullPointerExceptions() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(EvictingQueue.class);
    tester.testAllPublicConstructors(EvictingQueue.class);
    EvictingQueue<String> queue = EvictingQueue.create(5);
    // The queue must be non-empty so it throws a NPE correctly
    queue.add("one");
    tester.testAllPublicInstanceMethods(queue);

    thread.start();
    thread.join();
    assertTrue(completed);
  }

  public void testNulls() {
    NullPointerTester npTester = new NullPointerTester();
    npTester.testAllPublicConstructors(ThreadFactoryBuilder.class);
    npTester.testAllPublicStaticMethods(ThreadFactoryBuilder.class);
    npTester.testAllPublicInstanceMethods(builder);
  }

  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicConstructors(MinMaxPriorityQueue.class);
    tester.testAllPublicStaticMethods(MinMaxPriorityQueue.class);
    tester.testAllPublicInstanceMethods(MinMaxPriorityQueue.<String>create());
  }